Explosive-engine.



H. GRADE. EXPLOSIVE ENGINE.

APPLICATION FILED AUG.7.1Q 05.

"' 2 SHEETS-SHEET L No. 873,857 4 PATENTED D3047, 1907.

H. GRADE. BXPLOSIVE ENGINE.

APPLICATION nun AUG.7.1905.

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J94 Q i m z/mda (*4 aw it) unnrisn HANS GRADE, 05' M'AGDEBURU, GERMANY.

EX?LO$KVE-ENGINE.

Specification of Letters Patent.

Patented Dec. 1?, 1907.,

Application filed August 7. 1905. Serial E0 273,121!

To all whom it may concern:-

i Be it known that I, HANs GRADE, e subjeot of the King of Prussia,residing at Mugdeburg, German Empire, have 'invei'lted certain new anduseful improvements in Explosive-Engines and 1 do hereby deelare thefollowing to be zi'luli, clear. end'exset description of the invention,such as will enable others skilled in the art to which it upper-talus tomake and use the some, reference being had by means of an inlet value,which at the slime time lets pass or forms this charge mixture .andserves also when using liquid fuel as a means for heating this fuel in apreliminary manner and volatilizing it.

Referring to the drawing in which like parts are similarly designs-ted,Figure l is a vertical longitudinal section of a motor showing the inletvalve embodying my invention attached. Fig. 2 is a vertical longitudinalsection of another form of the inlet valve embodying my invention. Fig.3 is it front view of the inlet .valve seat in Fig. 2 i

The inlet valve Fig. 1 is shown in connection with a two-stroke cyclemotor designed for using a aseous combustible. The cylinder orcon'fbustion chamber 10 is provided with an inlet port 11, for themixture of air and gas and an exhaust port 12 controlled by the piston18 through which port the products of combustion are expelled.

Below the eylinder i0 is the closed crank chamber 13 having besrhum 14for the crank shaft 15thet is connected by the piston rod 17 to thepiston 18 in any suitable manner.

Between the cylinder 10 and the crank case 13 that acts us 11 pumpehznnber, is a by pass 19 end in the side of this passage '19 is placedthe seat for the inletelve.

The pipe 21. for eombustible mixture terininetes and is contro led bysubstantially he lower half of the inlet veive'23 as s r we and ad acentthe pump chamber 35% that the upper part of the valve vill control thepassage of sir through its fit) this hen I exposed at. the part 22 tothe outer air, so that when the valve opened the outer air will throughsubstantially the upper part 22 of the valve seat through the inletport11 into the cylinder. The valve 23 is normally held to its seat 20 byrue-ans or sprin 2 4 in the usual in annex.

in. the modification shown in Figs. 2 end 3 the mixture is produced bythe inlet valve itself. The inlet valve consists of easing or seat amounted on the cylinder 3 and of 2 plate or disk 0. The seat a hsis'ecentrel opening 1 forming a channel for supplying an and is providedwith e spider 4 cerryin a guide sleeve 5 for the stem of the valve dies0.

This seat has also an annular channel I) closed at its inner side by aring adapted and soldered to the sent a. The disk 0 is provided with astem 7 having mounted on it e washer 8 and between this washer 8 and thespider 4 a spring 9 is arranged pressing the vslve disk 0 against theseat a. (ipenings or nozzles e extend from the channel 1 to the seatsurfers. For liquid fuel these openings (1 ere a-rrengeil in a smallnumber (for example 2-- l) and smaller, and for gas they are arrangedin. a.

greater number (for example 7-10) and broader. These openings areprovided. only in the under half of the valve seat, which under half isarranged towards th erenlr chamber, end are closed by the itself, beingpossible owing to the smell displacing pressure, as it takes place inother construotions in a similar manner i1 using a speeisl fuel valvesituated before inlet valve. The luelis supplied to the annulsr channell) through a thresded inlot pipe e. The operation of form shown in fig.l is as follows: By the upward movement the piston the inlet vs-lve 23is automatic-ally opened by reason suction action of the piston andthrough the upper of its seat air is drawn into the bypass 19 andthrough the 10*. er pert combustible mixture and 00th are conductedthrough 19 into the srunh ease i 3. As soo n as the piston is drivendownwards by the ignition o'irthe gases, the inlet-valve 23 closes endthe sir and gas mixture in the creui: case are compressed. Then when thepiston 18 uncovers the inletqiort 11 the compressed in. 13 and 19 aredriven into the eylind 0. Since ou'ring the un stroke of the pis ltislly onl the lower hull of the valve an only through o unpn: in thereis d i the upward travel or the p n-stun queen;-

dist:

ter the cy air in the upper part of the by-pass 19 which when the piston18 uncovers port 11 will enof the channel 1 released by the valve disk 0into the passage f] and fills the upper space. On the under hal on thecontrary, either the finished mixture enters or the entering air sucksthe fuel from the openings at and mixes with it, Whereat liquid fuel isheated in a pre liminary manner at the same time in the annular channel1). Therefore the usual noninflammable isolating layer drawn through theupper half of the opening of the inlet valve is placed between theexhaust gases of the preceding explosion and the new mixture. 'Withregard to the other engines, the separating layer is produced byauxiliary channels, special valves or mixture chambers etc, but in myinver. tion the separating layer is produced by the arrangement of thevalve on. the passage leading to the cylinder and by supplyingthemixture or the fuel from one half of the valve.

Having thus described my invention, what I claim as new therein anddesire to secure by v I Letters Patent, is

' l. in a two-stroke cycle ex losion engine the combination with thecomli berand the crank chamber of a by-pass connecting them, a valve insaid by-pass and means to admit air from the valve to said byass andcombustible from substantially one all" of this valve nearest the crankchamber to said by-pass, substantially as described. 2. In'a two-strokecycle ex losion engine the combination with the combustion chaminderfirst and form a separating layer between the spent gases and the newustion chamher and crank chamber of a by pass'connect ing them, a valveand valve seat in the side of said by-pass, means to admit air throughthe valve and fuel admission ports in a por tion of the seat adjacentthe crankchamber as described.

3. In a two-stroke cycle-ex losion engine the combination with the comustion cham- /ber and the crank chamber acting as a pump means to permitthe"passagc of air throu h the valve, an annular chanhel formed in valveseat, fuel out-let-ppenings from said passage through the seat oversubstantially only one-half the circumference thereof nearest' the crankchamber, said openings controlled by the valve.

4. In a two-stroke cycle explosion engine the combination with thecombustion cham her having inlet and exhaust ports controlled by thepiston and a crank chamber of a bypass extending from the inlet port tothe crank chamber, a valve admitting both combustible and air to saidby-pass, the combustible being admitted through substan: tially one-halfof the valve nearest the crank chamber.

5. In a two-stroke cycle explosion engine,- t'he combination with thecombustion and the crank chambers; of a by-pass connecting them, a valveand a valve seat in. said bypass, means to supply both air andcombustible to different portions of the valve and said valvecontrolling both the admission of air and combustible, the combustiblebeing admitted through that ortion of the valve nearest the crank chamer.

'In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two subscribing witnesses.

HANS GRADE.

Witnesses:

E'Mn. O. DANNENBERG, HENRY HASPER.

and controlled by said valve, substantially chamber of a bypass betweenthem, a valve and valve seat in the side of said bypass,

the

